我国大地测量学的进展和展望

回顾了我国大地测量工作的进展。面向 2 1世纪前期的我国经济和国防建设及科技和社会发展 ,展望了我国新世纪的大地测量 ,提出应逐步进入精确、动态、实时的现代化体系 ,即完善国家三维空间大地网 ;建立 GPS综合服务体系 ;提供导航和定位服务 ;测定地壳运动、电离层参数、大气中可降水份等信息 ;精化中国地区重力场参数 ;建立新的国家重力基准网 ;完成分米级精度的中国似大地水准面的推算 ;积极开展海洋和空间大地测量 ,为资源、环境的管理以及防灾监测做出应有的贡献。

Progress and Prospect of Geodesy in China

The progress of geodetic work in China since 80's is reviewed. In order to meet the future requirements in the national economic, science and social development in China, some main geodetic actions are proposed, which should be completed in the first ten years of the 21st century. (1) Improvement of national space geodetic reference system. To take a combined adjustment of three nationwide GPS networks, including 2000 GPS stations. (2) Establishment of GPS comprehensive service system. To lay down a nationwide national GPS permanent tracking network including more than 300 permanent tracking stations and their real time telecommunication network. To provide GPS precise ephemeris and tracking data; GPS differential information for navigation; crustal movement data, perceptible water and TEC information in the atmosphere and so on. (3) Refining Chinese local gravity field on land and sea. The determination of Chinese local quasi geoid with semi meter accuracy and 10' resolution. To establish a Chinese new 2000 gravity datum. Applying satellite altimeter technique and wavelet theory to improve gravity field in Chinese coastal water area; (4) Releveling the Chinese 1st order leveling network.